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Alarm.com Interview Questions

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You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

Let’s say that your company is running a standard control and variant AB test on a feature to increase conversion rates on the landing page. The PM checks the results and finds a .04 p-value.

How would you assess the validity of the result?

Experiment Validity

Let’s say we have a table with an <code>id</code> and <code>name</code> fields. The table holds over 100 million rows and we want to sample a random row in the table without throttling the database.

Write a query to randomly sample a row from this table.

Input:

<code>big_table</code> table

<table>
<thead>
<tr>
<th>Columns</th>
<th>Type</th>
</tr>
</thead>

<tbody>
<tr>
<td><code>id</code></td>
<td>INTEGER</td>
</tr>

<tr>
<td><code>name</code></td>
<td>VARCHAR</td>
</tr>
</tbody>
</table>

Write a query to randomly sample a row from a big table.

Random SQL Sample

Alarm.com Salaries by Position

As a Software Engineer, you will work with a small team of full-stack developers that work on all server-side aspects of smart home security. Our mandate is very broad and includes but not limited to processing security events, provisioning equipment, monitoring station signaling, testing automation and integrating a wide and diverse set of devices with the Alarm.com connected ecosystem. Our software development includes working on backend services, websites, and database design that make up our whole ecosystem. As a Senior Software Engineer, you will have the opportunity to work across a variety of technical areas. Typical projects will involve diverse technologies and skills, and require close collaboration with device engineers, business partners, and other engineering teams. Strong multi-tasking skills and the ability to self-learn are must-have attributes. Candidate must be able to communicate well within a team environment and work independently on self-directed tasks. Very few small companies innovate and develop across such a broad range of technologies as Alarm.com. This position is ideal for the candidate who seeks a small, friendly company culture where one can work closely with smart and highly productive people across a very interesting spectrum of wireless, software, and hardware/device technologies to develop outstanding consumer products. WHAT'S IN IT FOR YOU? <ul><li>Collaborate with outstanding people: We have a strong focus on teamwork, and we work to create a collaborative and welcoming environment that enables our teams to excel.</li><li>Make an immediate impact: You can expect to be given real responsibility for bringing new technologies to the marketplace. You will be empowered to perform as soon as you join the team!</li><li>Work with the latest technologies: You'll gain exposure to a broad spectrum of IoT and SaaS technology. Our tech stack includes .NET, SQL Server, Kafka, Ember.js, Node.js, as well as native iOS and Android applications.</li><li>Be Empowered: We don't want to micro-manage you. We barely want to tell you what to do. We want you to own stuff and bring your experience to make those products best in class.</li><li>Focus on fun: Alarm.com places high value on our team culture. We even have a committee dedicated to hosting a stand-out holiday party, happy hours, and other fun corporate events.</li><li>Alarm.com values working tougher and collaborating in person. Our employees work from the office 4 days a week.</li></ul> WHAT CAN YOU DO FOR ALARM.COM? <ul><li>Develop back-end software for a wide variety of platforms and technologies.</li><li>Take part in the entire project life cycle, from requirements development to deployment with lots of cross-team collaboration.</li><li>Engage in the research, evaluation, and application of new technologies and methodologies to solve challenging project goals.</li><li>Exercise good judgment. Know when to work quickly, and when to build a robust solution.</li><li>Bring your ideas! We want our engineers to collaborate on product development, not blindly build to a spec.</li></ul> WHAT DO YOU NEED? We are seeking someone who has: <ul><li>Bachelor's in Computer Science, Computer Engineering, a related field or equivalent work experience</li><li>5+ years of professional software development experience</li><li>Experience leading and mentoring other engineers</li><li>Strong object-oriented programming skills; C# experience required.</li><li>Experience with database design and development</li></ul> We would love if you have some of the below (but it is fine if you don't): <ul><li>Experience working with high-availability, high-throughput services</li><li>Experience with external facing APIs and/or third-party platform integrations</li><li>Familiarity with distributed event streaming platforms, such as Kafka</li><li>Experience with JavaScript development using an established JS framework, such as Ember</li><li>Familiarity with IoT protocols such as Z-Wave, ZigBee, or Matter</li><li>Familiarity with Google Smart Home API or similar Cloud to Cloud API.</li></ul> COMPANY INFO Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we're innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We're seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them. For more information, please visit www.alarm.com. COMPANY BENEFITS Alarm.com offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package! Alarm.com is an Equal Opportunity Employer In connection with your application, we collect information that identifies, reasonably relates to or describes you ("Personal Information"). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations such as managing our recruitment system and ensuring that we comply with labor laws and regulations even after we have made our employment decision. Notice To Third Party Agencies: Alarm.com understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with Alarm.com, please email your company information and standard agreement to RecruitingPartnerships@Alarm.com The salary range of this opportunity is listed below and is determined within a range based on factors including qualifications, location and experience. This allows opportunity for growth and development within the role. The salary offered is part of a total compensation package. Pay Range $140,000-$158,000 USD

Alarm.com is a rapidly expanding technology company developing innovative cloud and device solutions across a wide range of cutting-edge technologies that provide a unified, connected service to millions of residential and commercial properties in the US and abroad. We are looking for a talented and passionate embedded software engineer for the Device Engineering team to help us define the future of the Internet-of-Things for residential and commercial properties by creating and integrating devices including security panels, networking gateways, and video cameras. You will be working with a team of talented engineers across a diverse set of technological backgrounds to design devices, build and manufacture hardware, architect and implement software, and collaborate in an agile and fast-paced environment. Required Qualifications: <ul> <li>Bachelor's Degree in Computer Science, Electrical/Computer engineering, or related field, or equivalent experience. </li><li>10+ years of experience with embedded software development with Linux platforms. </li><li>Experience with board support packages, Linux kernel and drivers, and hardware bring-up. </li><li>Experience with C/C++ coding following scalable and efficient software architecture and design principles. </li><li>Familiarity with hardware peripherals such as UART, SPI, I2C, ADC, etc. </li><li>Experience with cross-compilation and development frameworks in platforms and environments such as Yocto, buildroot, OpenWRT, or Android. </li><li>Understanding of electronics and ability to read circuit schematics. </li><li>Experience with debugging tools such as JTAG, SWD, oscilloscopes, and logic analyzers. </li><li>Knowledge of version control systems such as Git. </li><li>Experience with cryptography and specialized embedded processors a plus. </li><li>Experience or exposure with cameras or video devices </li><li>Other duties as assigned </li></ul>Responsibilities: <ul> <li>Work with other engineers to develop board support packages, platform frameworks, and embedded Linux applications using C/C++. </li><li>Work with electrical and mechanical engineers to design and manufacture embedded Linux devices. </li><li>Work with software engineers to design and implement features that interact with the cloud. </li><li>Work with product managers and quality engineers to ensure the products meet Alarm.com's standards. </li><li>Communicate effectively and collaborate with others to ensure the timely delivery of projects. </li></ul>WHY WORK FOR ALARM.COM? <ul> <li>Collaborate with outstanding people: We hire only the best. Our standards are high and our employees enjoy working alongside other high achievers. </li><li>Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the Alarm.com team! </li><li>Gain well rounded experience: Alarm.com offers a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business. </li><li>Focus on fun: Alarm.com places high value on our team culture. We even have a committee dedicated to hosting a stand-out holiday party, happy hours, and other fun corporate events. </li><li>Alarm.com values working together and collaborating in person. Our employees work from the office 4 days a week. </li></ul> COMPANY INFO Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we're innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We're seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them. For more information, please visit www.alarm.com. COMPANY BENEFITS Alarm.com offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package! Alarm.com is an Equal Opportunity Employer In connection with your application, we collect information that identifies, reasonably relates to or describes you ("Personal Information"). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations such as managing our recruitment system and ensuring that we comply with labor laws and regulations even after we have made our employment decision. Notice To Third Party Agencies: Alarm.com understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with Alarm.com, please email your company information and standard agreement to RecruitingPartnerships@Alarm.com The salary range of this opportunity is listed below and is determined within a range based on factors including qualifications, location and experience. This allows opportunity for growth and development within the role. The salary offered is part of a total compensation package. Pay Range $180,000-$225,000 USD

POSITION OVERVIEW Alarm.com is seeking an ambitious and talented Embedded Software Engineer with a B.A., B.S., or M.S. Electrical/Computer Engineering or a similar engineering background with an interest in sensing applications and IoT. The Embedded Software Engineer position is ideal for candidates who want to work with various video and audio technologies in an Embedded Linux environment. Interest in sensors, computer vision, and microcontrollers for home automation and security applications, is plus as well. RESPONSIBILITIES: <ul> <li>Develop firmware and video applications for Alarm.com's smart cameras </li><li>Work closely with multiple teams including electronic design engineers on system design and integrate firmware and hardware components of the overall system design </li><li>Be knowledgeable and forward-thinking regarding technologies and developments in embedded firmware development, sensors, short and long-range wireless communication, and power management </li><li>Researching, designing and implementing highly reliable embedded firmware and software </li><li>Collaborate with firmware engineers </li><li>Operating independently but working with the senior management to understand and be fully aligned with company goals and strategies </li><li>Building systems that balance resources, constraints, requirements, and complexity by analyzing all possible options for designing and deriving the best solution based on sound analytical judgment </li><li>Work with hardware team to communicate requirements </li><li>Work with Alarm.com's backend team to integrate camera firmware to the backend </li><li>Preferred experience with cameras or video devices </li><li>Other duties as assigned </li></ul>CANDIDATE PROFILE: <ul> <li>Bachelors or Masters degree in Electrical or Computer Engineering with 3-5 years of work experience </li><li>Strong C programming skills </li><li>Strong C++ (C++11 or later) development skills in an embedded Linux environment </li><li>Shell scripting experience </li><li>Strong understanding of various Linux IPC mechanisms </li><li>Experience in Buildroot </li><li>Linux kernel driver development </li><li>Strong understanding of proper code design for multi-threaded environments </li><li>Experience with advanced build systems such as CMake or Meson </li><li>Knowledge of video compression standards and frameworks such as H.264, MPEG </li><li>Experience developing REST APIs </li><li>Good understanding of networking protocols relevant to video such as UDP, TCP, RTP, RTSP, WebRTC </li><li>Experience with GStreamer media framework application development and ffmpeg </li></ul>WHY WORK FOR ALARM.COM? <ul> <li>Collaborate with outstanding people: We hire only the best. Our standards are high and our employees enjoy working alongside other high achievers. </li><li>Make an immediate impact: New employees can expect to be given real responsibility for bringing new technologies to the marketplace. You are empowered to perform as soon as you join the Alarm.com team! </li><li>Gain well rounded experience: Alarm.com offers a diverse and dynamic environment where you will get the chance to work directly with executives and develop expertise across multiple areas of the business. </li><li>Focus on fun: Alarm.com places high value on our team culture. We even have a committee dedicated to hosting a stand-out holiday party, happy hours, and other fun corporate events. </li><li>Alarm.com values working together and collaborating in person. Our employees work from the office 4 days a week. </li></ul> COMPANY INFORMATION Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we're innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We're seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them. For more information, please visit www.alarm.com. COMPANY BENEFITS Alarm.com offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package! Alarm.com is an Equal Opportunity Employer In connection with your application, we collect information that identifies, reasonably relates to or describes you ("Personal Information"). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies. By submitting your application, you acknowledge that we may retain some of the personal data that you provide in your application for our internal operations such as managing our recruitment system and ensuring that we comply with labor laws and regulations even after we have made our employment decision. Notice To Third Party Agencies: Alarm.com understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with Alarm.com, please email your company information and standard agreement to RecruitingPartnerships@Alarm.com JR102036 The salary range of this opportunity is listed below and is determined within a range based on factors including qualifications, location and experience. This allows opportunity for growth and development within the role. The salary offered is part of a total compensation package. Pay Range $120,000-$140,000 USD

Responsibilities

The Full-Stack Software Engineer’s primary job responsibilities will include:

Designing, implementing and testing new software features
Innovating and improving existing products
Analyzing functional requirements and product specifications
Assisting with researching, adopting and integrating new technologies
Taking ownership of projects to ensure their successful completion with respect to deadlines
Working with DevOps team to assist in setup, deployment, and maintenance of various services
Other duties as assigned

Requirements

1+ years of experience in Software Development
B.A. or B.S. in Computer Science or similar engineering program with strong academic performance.
Self-starter, analytical, tenacious problem solver
Strong verbal and written communication skills
Rigorous attention to detail and focus on quality of deliverables
Proven team experience and comfort in a team-oriented environment
Passion for working with technology and excitement for creating high quality consumer technology products
1+ years of experience with PHP, Javascript, CSS, and HTML
Experience with version control systems
DevOps experience a plus

Company Info

Alarm.com is the leading cloud-based platform for smart security and the Internet of Things. More than 7.6 million home and business owners depend on our solutions every day to make their properties safer, smarter, and more efficient. And every day, we’re innovating new technologies in rapidly evolving spaces including AI, video analytics, facial recognition, machine learning, energy analytics, and more. We’re seeking those who are passionate about creating change through technology and who want to make a lasting impact on the world around them.

For more information, please visit www.alarm.com.

Company Benefits

Alarm.com offers competitive pay and benefits inclusive of subsidized medical plan options, an HSA with generous company contribution, a 401(k) with employer match, and paid holidays, wellness time, and vacation increasing with tenure. Paid maternity and bonding leave, company-paid disability and life insurance, FSAs, well-being resources and activities, and a casual dress work environment are also part of our outstanding total rewards package!

Alarm.com is an Equal Opportunity Employer

In connection with your application, we collect information that identifies, reasonably relates to or describes you (“Personal Information”). The categories of Personal Information that we may collect include your name, government-issued identification number(s), email address, mailing address, other contact information, emergency contact information, employment history, educational history, criminal record, and demographic information. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies.

Notice To Third Party Agencies:

Alarm.com understands the value of professional recruiting services. However, we are not accepting resumes from recruiters or employment agencies for this position. In the event we receive a resume or candidate referral for this position from a third-party recruiter or agency without a previously signed agreement, we reserve the right to pursue and hire those candidate(s) without any financial obligation to you. If you are interested in working with Alarm.com, please email your company information and standard agreement to RecruitingPartnerships@Alarm.com.
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Alarm.com Interview Questions

Alarm.com Interview Guides

Alarm.com Interview Questions

Alarm.com Salaries by Position

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